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    • 8. 发明公开
    • ORGANIC ELECTROLUMINESCENT DEVICE
    • 有机电致发光器件
    • EP1138089A1
    • 2001-10-04
    • EP00960679.9
    • 2000-09-20
    • Koninklijke Philips Electronics N.V.
    • HUIBERTS, Johannes, N.MOURIER, Loic, C., A.VAN DE WEIJER, PeterLIEDENBAUM, Coen, T., H., F.VAN DELDEN, Martinus, H., W., M.
    • H01L51/20H01L21/66G01R31/26
    • H01L51/5012G01R31/2642
    • The invention provides a tool to select reliable organic LED devices, where the risk for failure before the end of its lifetime is low. This tool comprises the steps of: i) subjecting the device to a high electric field over the electroluminescent layer. This leads to a division of the devices into two, clearly separated, populations, namely one population with a low leakage current (current through the electroluminescent layer in reverse voltage operation) and one population with a high leakage current. In this step, the first population is selected in accordance with a current criterion. ii) detecting instabilities in the leakage current, referred to as noise. It has been established that these instabilities arise in particular at reverse driving voltages between 1 and 10 Volts. These instabilities are a measure of the occurrence of early failures during operation. In this step, the devices are selected in accordance with a noise criterion.
    • 本发明提供了一种选择可靠的有机LED器件的工具,其中在其寿命结束之前的失败风险较低。 该工具包括以下步骤:i)使器件在电致发光层上经受高电场。 这导致将器件分成两个明显分离的群体,即具有低漏电流的一个群体(在反向电压操作中通过电致发光层的电流)和一个具有高漏电流的群体。 在这一步骤中,按照当前的标准选择第一群体; ii)检测泄漏电流中的不稳定性,称为噪声。 已经确定,这些不稳定性尤其出现在1和10伏之间的反向驱动电压下。 这些不稳定性是衡量运行过程中发生早期故障的指标。 在这个步骤中,根据噪声标准来选择设备。